Question 1 of 6
Basic

What is the limit of sand in well water as recommended by US EPA and National Water Works Association for flood irrigation?

Question 2 of 6
Basic

Identify which of the following sentences are true:

Question 3 of 6
Basic

Which of the following options is true about a centrifugal pump?

Question 4 of 6
Basic

How do we calculate head requirement from the pump?

Question 5 of 6
Basic

What are the two factors that should be ensured when the total head for a ground water pump is calculated?

Question 6 of 6
Basic

How many hours will a correctly sized pump run a day to meet the demand?

Question 6 of 6
Basic

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1: What is the limit of sand in well water as recommended by US EPA and National Water Works Association for flood irrigation?
10ppm
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1: What is the limit of sand in well water as recommended by US EPA and National Water Works Association for flood irrigation?
15ppm
1: What is the limit of sand in well water as recommended by US EPA and National Water Works Association for flood irrigation?
20ppm
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2: Identify which of the following sentences are true:
Groundwater typically requires more treatment than surface water.
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2: Identify which of the following sentences are true:
To improve the filtering function, the borehole diameter must be exactly the same as the casing diameter.
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2: Identify which of the following sentences are true:
The drawdown is the difference between the static and the dynamic water level.
3: Which of the following options is true about a centrifugal pump?
If the pump is pumping at a lower flow, it delivers a higher head.
3: Which of the following options is true about a centrifugal pump?
If the pump is pumping at a lower flow, it delivers a lower head.
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3: Which of the following options is true about a centrifugal pump?
If the pump is pumping at a higher flow, it delivers a higher head.
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4: How do we calculate head requirement from the pump?
Suction lift + static water level + drawdown in the well + pressure head of the application device + friction loss in the pipes
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4: How do we calculate head requirement from the pump?
Elevation lift + static water level + drawdown in the well + pressure head of the application device + friction loss in the pipes
4: How do we calculate head requirement from the pump?
Elevation lift + static water level + drawdown in the well + pressure head of the application device - friction loss in the pipes
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5: What are the two factors that should be ensured when the total head for a ground water pump is calculated?
There is no elevation lift and the drawdown has to be added to the suction lift.
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5: What are the two factors that should be ensured when the total head for a ground water pump is calculated?
There is no suction lift. Instead there is static water table and the drawdown has to be added to the elevation lift.
5: What are the two factors that should be ensured when the total head for a ground water pump is calculated?
There is no suction lift and the drawdown has to be deducted from the elevation lift.
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6: How many hours will a correctly sized pump run a day to meet the demand?
8 hours
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6: How many hours will a correctly sized pump run a day to meet the demand?
12-18 hours
6: How many hours will a correctly sized pump run a day to meet the demand?
24 hours
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